José Cristian Garreffa
type: MusicGroup
genre: tango
popularity: 4
followers: 88
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x86bf50f38cfaa7909760384b3160c559be544af68082e06f77c650d17022b1d8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954553
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954553
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ac51de19-c575-474f-ae85-5b1b3f165257.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ac51de19-c575-474f-ae85-5b1b3f165257.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ac51de19-c575-474f-ae85-5b1b3f165257
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T11:51:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x86bf50f38cfaa7909760384b3160c559be544af68082e06f77c650d17022b1d8","name":"José Cristian Garreffa","registered_at":"2026-06-20T09:41:31Z","symbol":"NIM1585714","token_address":"0x25088e8d99c2acf8e1f1a033658773183a472d9f","type":"artist","uuid":"ac51de19-c575-474f-ae85-5b1b3f165257"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bf50f38cfaa7909760384b3160c559be544af68082e06f77c650d17022b1d8. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac51de19-c575-474f-ae85-5b1b3f165257.json and https://artists.proofprofile.net/proofs/artist/ac51de19-c575-474f-ae85-5b1b3f165257.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T11:51:30Z
  text: {"copyright_id":"0x86bf50f38cfaa7909760384b3160c559be544af68082e06f77c650d17022b1d8","name":"José Cristian Garreffa","registered_at":"2026-06-20T09:41:31Z","symbol":"NIM1585714","token_address":"0x25088e8d99c2acf8e1f1a033658773183a472d9f","type":"artist","uuid":"ac51de19-c575-474f-ae85-5b1b3f165257"}
album: Astor Piazzolla Historia del Tango
  type: MusicAlbum
  date published: 2008-06-01